Anger spats are normal, as long as they don't become the default.
From an ND perspective there's also the angrymaking part of having a possible distraction from the ennui of grief being potentially snatched away. Then there's just the complete shit situation of wanting to help but very possibly not being able to (which btw does nothing to assuage the sense of moral obligation)
Ramble ramble but tldr: a boilover is an appropriate response. I'm just so sorry this is happening.
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Totally get you, got a bit myself. Max is doing mondo dumps that for some reason trigger my rage at smells response, work is being a complete arseington and Cerys needs us to step back a few introductory steps. Its stressy and its angrymaking but i know the anger is just guilt I shouldn't really feel cosplaying as something else.
The horror persist but so do we.